We buy every serum. Nobody pays for a place.
Serum4Lashes exists because the lash serum category is loud, expensive and short on honest comparison. We fix that with a fixed method and a standing panel — and by refusing sponsor money.
We buy everything
Every serum in the ranking was purchased at full retail price. We never accept free product for review, because free product buys goodwill.
No paid placements
Position in the ranking cannot be bought. Store links go to the brand's official shop and are not affiliate or sponsored links.
One fixed rubric
Every product is scored the same way on the same 100-point rubric, so a 9.1 means the same thing across the whole ranking.
The methodology
Every serum runs the identical protocol. We buy it at retail, assign it to members of a standing 24-person panel, and have each panelist apply nightly for twelve weeks. Standardised macro photography is taken at weeks 0, 6 and 12 under fixed lighting and angle.
Two reviewers score length and density from the photos blind — without knowing which serum produced them — and we cross-check against weekly panelist self-reports and a running tolerability log. The final score is a weighted composite on a fixed 100-point rubric.
The test panel
The panel spans ages 24–58 and includes sensitive-eye, contact-lens and lash-extension wearers, so tolerability is tested across the people who actually use these products.
Spotted an error, want a serum considered for the list, or have a press question? hello@serum4lashes.com